CSS水平ラインアニメーション（グラデーションカラー）

Question

私はこの1つのような色、アニメーション、縦線があります。

@keyframes colored { 
 
    0% { 
 
    background-image: -webkit-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: -moz-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: -o-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: linear-gradient(to right, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    } 
 
    12.5% { 
 
    background-image: -webkit-linear-gradient(left, #62c2e4, #62c2e4 12.5%, #c4e17f 12.5%, #c4e17f 25%, #f7fdca 25%, #f7fdca 37.5%, #fecf71 37.5%, #fecf71 50%, #f0776c 50%, #f0776c 62.5%, #db9dbe 62.5%, #db9dbe 75%, #c49cde 75%, #c49cde 87.5%, #669ae1 87.5%, #669ae1); 
 
    background-image: -moz-linear-gradient(left, #62c2e4, #62c2e4 12.5%, #c4e17f 12.5%, #c4e17f 25%, #f7fdca 25%, #f7fdca 37.5%, #fecf71 37.5%, #fecf71 50%, #f0776c 50%, #f0776c 62.5%, #db9dbe 62.5%, #db9dbe 75%, #c49cde 75%, #c49cde 87.5%, #669ae1 87.5%, #669ae1); 
 
    background-image: -o-linear-gradient(left, #62c2e4, #62c2e4 12.5%, #c4e17f 12.5%, #c4e17f 25%, #f7fdca 25%, #f7fdca 37.5%, #fecf71 37.5%, #fecf71 50%, #f0776c 50%, #f0776c 62.5%, #db9dbe 62.5%, #db9dbe 75%, #c49cde 75%, #c49cde 87.5%, #669ae1 87.5%, #669ae1); 
 
    background-image: linear-gradient(to right, #62c2e4, #62c2e4 12.5%, #c4e17f 12.5%, #c4e17f 25%, #f7fdca 25%, #f7fdca 37.5%, #fecf71 37.5%, #fecf71 50%, #f0776c 50%, #f0776c 62.5%, #db9dbe 62.5%, #db9dbe 75%, #c49cde 75%, #c49cde 87.5%, #669ae1 87.5%, #669ae1); 
 
    } 
 
    25% { 
 
    background-image: -webkit-linear-gradient(left, #669ae1, #669ae1 12.5%, #62c2e4 12.5%, #62c2e4 25%, #c4e17f 25%, #c4e17f 37.5%, #f7fdca 37.5%, #f7fdca 50%, #fecf71 50%, #fecf71 62.5%, #f0776c 62.5%, #f0776c 75%, #db9dbe 75%, #db9dbe 87.5%, #c49cde 87.5%, #c49cde); 
 
    background-image: -moz-linear-gradient(left, #669ae1, #669ae1 12.5%, #62c2e4 12.5%, #62c2e4 25%, #c4e17f 25%, #c4e17f 37.5%, #f7fdca 37.5%, #f7fdca 50%, #fecf71 50%, #fecf71 62.5%, #f0776c 62.5%, #f0776c 75%, #db9dbe 75%, #db9dbe 87.5%, #c49cde 87.5%, #c49cde); 
 
    background-image: -o-linear-gradient(left, #669ae1, #669ae1 12.5%, #62c2e4 12.5%, #62c2e4 25%, #c4e17f 25%, #c4e17f 37.5%, #f7fdca 37.5%, #f7fdca 50%, #fecf71 50%, #fecf71 62.5%, #f0776c 62.5%, #f0776c 75%, #db9dbe 75%, #db9dbe 87.5%, #c49cde 87.5%, #c49cde); 
 
    background-image: linear-gradient(to right, #669ae1, #669ae1 12.5%, #62c2e4 12.5%, #62c2e4 25%, #c4e17f 25%, #c4e17f 37.5%, #f7fdca 37.5%, #f7fdca 50%, #fecf71 50%, #fecf71 62.5%, #f0776c 62.5%, #f0776c 75%, #db9dbe 75%, #db9dbe 87.5%, #c49cde 87.5%, #c49cde); 
 
    } 
 
    37.5% { 
 
    background-image: -webkit-linear-gradient(left, #c49cde, #c49cde 12.5%, #669ae1 12.5%, #669ae1 25%, #62c2e4 25%, #62c2e4 37.5%, #c4e17f 37.5%, #c4e17f 50%, #f7fdca 50%, #f7fdca 62.5%, #fecf71 62.5%, #fecf71 75%, #f0776c 75%, #f0776c 87.5%, #db9dbe 87.5%, #db9dbe); 
 
    background-image: -moz-linear-gradient(left, #c49cde, #c49cde 12.5%, #669ae1 12.5%, #669ae1 25%, #62c2e4 25%, #62c2e4 37.5%, #c4e17f 37.5%, #c4e17f 50%, #f7fdca 50%, #f7fdca 62.5%, #fecf71 62.5%, #fecf71 75%, #f0776c 75%, #f0776c 87.5%, #db9dbe 87.5%, #db9dbe); 
 
    background-image: -o-linear-gradient(left, #c49cde, #c49cde 12.5%, #669ae1 12.5%, #669ae1 25%, #62c2e4 25%, #62c2e4 37.5%, #c4e17f 37.5%, #c4e17f 50%, #f7fdca 50%, #f7fdca 62.5%, #fecf71 62.5%, #fecf71 75%, #f0776c 75%, #f0776c 87.5%, #db9dbe 87.5%, #db9dbe); 
 
    background-image: linear-gradient(to right, #c49cde, #c49cde 12.5%, #669ae1 12.5%, #669ae1 25%, #62c2e4 25%, #62c2e4 37.5%, #c4e17f 37.5%, #c4e17f 50%, #f7fdca 50%, #f7fdca 62.5%, #fecf71 62.5%, #fecf71 75%, #f0776c 75%, #f0776c 87.5%, #db9dbe 87.5%, #db9dbe); 
 
    } 
 
    50% { 
 
    background-image: -webkit-linear-gradient(left, #db9dbe, #db9dbe 12.5%, #c49cde 12.5%, #c49cde 25%, #669ae1 25%, #669ae1 37.5%, #62c2e4 37.5%, #62c2e4 50%, #c4e17f 50%, #c4e17f 62.5%, #f7fdca 62.5%, #f7fdca 75%, #fecf71 75%, #fecf71 87.5%, #f0776c 87.5%, #f0776c); 
 
    background-image: -moz-linear-gradient(left, #db9dbe, #db9dbe 12.5%, #c49cde 12.5%, #c49cde 25%, #669ae1 25%, #669ae1 37.5%, #62c2e4 37.5%, #62c2e4 50%, #c4e17f 50%, #c4e17f 62.5%, #f7fdca 62.5%, #f7fdca 75%, #fecf71 75%, #fecf71 87.5%, #f0776c 87.5%, #f0776c); 
 
    background-image: -o-linear-gradient(left, #db9dbe, #db9dbe 12.5%, #c49cde 12.5%, #c49cde 25%, #669ae1 25%, #669ae1 37.5%, #62c2e4 37.5%, #62c2e4 50%, #c4e17f 50%, #c4e17f 62.5%, #f7fdca 62.5%, #f7fdca 75%, #fecf71 75%, #fecf71 87.5%, #f0776c 87.5%, #f0776c); 
 
    background-image: linear-gradient(to right, #db9dbe, #db9dbe 12.5%, #c49cde 12.5%, #c49cde 25%, #669ae1 25%, #669ae1 37.5%, #62c2e4 37.5%, #62c2e4 50%, #c4e17f 50%, #c4e17f 62.5%, #f7fdca 62.5%, #f7fdca 75%, #fecf71 75%, #fecf71 87.5%, #f0776c 87.5%, #f0776c); 
 
    } 
 
    62.5% { 
 
    background-image: -webkit-linear-gradient(left, #f0776c, #f0776c 12.5%, #db9dbe 12.5%, #db9dbe 25%, #c49cde 25%, #c49cde 37.5%, #669ae1 37.5%, #669ae1 50%, #62c2e4 50%, #62c2e4 62.5%, #c4e17f 62.5%, #c4e17f 75%, #f7fdca 75%, #f7fdca 87.5%, #fecf71 87.5%, #fecf71); 
 
    background-image: -moz-linear-gradient(left, #f0776c, #f0776c 12.5%, #db9dbe 12.5%, #db9dbe 25%, #c49cde 25%, #c49cde 37.5%, #669ae1 37.5%, #669ae1 50%, #62c2e4 50%, #62c2e4 62.5%, #c4e17f 62.5%, #c4e17f 75%, #f7fdca 75%, #f7fdca 87.5%, #fecf71 87.5%, #fecf71); 
 
    background-image: -o-linear-gradient(left, #f0776c, #f0776c 12.5%, #db9dbe 12.5%, #db9dbe 25%, #c49cde 25%, #c49cde 37.5%, #669ae1 37.5%, #669ae1 50%, #62c2e4 50%, #62c2e4 62.5%, #c4e17f 62.5%, #c4e17f 75%, #f7fdca 75%, #f7fdca 87.5%, #fecf71 87.5%, #fecf71); 
 
    background-image: linear-gradient(to right, #f0776c, #f0776c 12.5%, #db9dbe 12.5%, #db9dbe 25%, #c49cde 25%, #c49cde 37.5%, #669ae1 37.5%, #669ae1 50%, #62c2e4 50%, #62c2e4 62.5%, #c4e17f 62.5%, #c4e17f 75%, #f7fdca 75%, #f7fdca 87.5%, #fecf71 87.5%, #fecf71); 
 
    } 
 
    75% { 
 
    background-image: -webkit-linear-gradient(left, #fecf71, #fecf71 12.5%, #f0776c 12.5%, #f0776c 25%, #db9dbe 25%, #db9dbe 37.5%, #c49cde 37.5%, #c49cde 50%, #669ae1 50%, #669ae1 62.5%, #62c2e4 62.5%, #62c2e4 75%, #c4e17f 75%, #c4e17f 87.5%, #f7fdca 87.5%, #f7fdca); 
 
    background-image: -moz-linear-gradient(left, #fecf71, #fecf71 12.5%, #f0776c 12.5%, #f0776c 25%, #db9dbe 25%, #db9dbe 37.5%, #c49cde 37.5%, #c49cde 50%, #669ae1 50%, #669ae1 62.5%, #62c2e4 62.5%, #62c2e4 75%, #c4e17f 75%, #c4e17f 87.5%, #f7fdca 87.5%, #f7fdca); 
 
    background-image: -o-linear-gradient(left, #fecf71, #fecf71 12.5%, #f0776c 12.5%, #f0776c 25%, #db9dbe 25%, #db9dbe 37.5%, #c49cde 37.5%, #c49cde 50%, #669ae1 50%, #669ae1 62.5%, #62c2e4 62.5%, #62c2e4 75%, #c4e17f 75%, #c4e17f 87.5%, #f7fdca 87.5%, #f7fdca); 
 
    background-image: linear-gradient(to right, #fecf71, #fecf71 12.5%, #f0776c 12.5%, #f0776c 25%, #db9dbe 25%, #db9dbe 37.5%, #c49cde 37.5%, #c49cde 50%, #669ae1 50%, #669ae1 62.5%, #62c2e4 62.5%, #62c2e4 75%, #c4e17f 75%, #c4e17f 87.5%, #f7fdca 87.5%, #f7fdca); 
 
    } 
 
    87.5% { 
 
    background-image: -webkit-linear-gradient(left, #f7fdca, #f7fdca 12.5%, #fecf71 12.5%, #fecf71 25%, #f0776c 25%, #f0776c 37.5%, #db9dbe 37.5%, #db9dbe 50%, #c49cde 50%, #c49cde 62.5%, #669ae1 62.5%, #669ae1 75%, #62c2e4 75%, #62c2e4 87.5%, #c4e17f 87.5%, #c4e17f); 
 
    background-image: -moz-linear-gradient(left, #f7fdca, #f7fdca 12.5%, #fecf71 12.5%, #fecf71 25%, #f0776c 25%, #f0776c 37.5%, #db9dbe 37.5%, #db9dbe 50%, #c49cde 50%, #c49cde 62.5%, #669ae1 62.5%, #669ae1 75%, #62c2e4 75%, #62c2e4 87.5%, #c4e17f 87.5%, #c4e17f); 
 
    background-image: -o-linear-gradient(left, #f7fdca, #f7fdca 12.5%, #fecf71 12.5%, #fecf71 25%, #f0776c 25%, #f0776c 37.5%, #db9dbe 37.5%, #db9dbe 50%, #c49cde 50%, #c49cde 62.5%, #669ae1 62.5%, #669ae1 75%, #62c2e4 75%, #62c2e4 87.5%, #c4e17f 87.5%, #c4e17f); 
 
    background-image: linear-gradient(to right, #f7fdca, #f7fdca 12.5%, #fecf71 12.5%, #fecf71 25%, #f0776c 25%, #f0776c 37.5%, #db9dbe 37.5%, #db9dbe 50%, #c49cde 50%, #c49cde 62.5%, #669ae1 62.5%, #669ae1 75%, #62c2e4 75%, #62c2e4 87.5%, #c4e17f 87.5%, #c4e17f); 
 
    } 
 
    100% { 
 
    background-image: -webkit-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: -moz-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: -o-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: linear-gradient(to right, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    } 
 
} 
 
.colored { 
 
    margin-top: 5px; 
 
    margin-bottom: 5px; 
 
    height: 7px; 
 
    border-top: 0; 
 
    background: #c4e17f; 
 
    border-radius: 5px; 
 
    background-image: -webkit-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: -moz-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: -o-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: linear-gradient(to right, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    animation-name: colored; 
 
    animation-duration: 2s; 
 
    animation-iteration-count: infinite; 
 
}

<hr class="colored">

をそれはいくつかのより良いで行うことができる場合、私は思ったんだけど（読みます：よりスマートな方法）。アニメーションのステップをすべて計算して準備するには時間がかかりました。

2番目の質問（コメントの1つに基づく）は、このアニメーションがスムーズにできるかどうかです。それを達成する方法は？

Answer 1

、ここに私の解決策は、私がステップ関数と背景の位置をアニメーション化しています

.colored { 
 
    margin-top: 5px; 
 
    margin-bottom: 5px; 
 
    height: 7px; 
 
    border-top: 0; 
 
    background: #c4e17f; 
 
    border-radius: 5px; 
 
    background-image: linear-gradient(to right, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    padding-right: 50%; 
 
    background-origin: content-box; 
 
    background-size: 200%; 
 
    animation-name: colored; 
 
    animation-duration: 2s; 
 
    animation-iteration-count: infinite; 
 
    animation-timing-function: steps(8); 
 
} 
 

 
@keyframes colored { 
 
    from {background-position: 0% 0%;} 
 
    to {background-position: 200% 0%;} 
 
}

<hr class="colored">

ですので、色の離散的変化が容易に達成される。

少し厄介なのは、1つのグラデーションを使用し、応答性があり、アニメーション化できることです。

バックグラウンドサイズが100％であるという最も簡単な解決策は、バックグラウンド位置の変更によるパーセンテージの影響を受けません。

トリックは、HTTPを使用して、あなたの質問にコードの量を減らしてみてください（パディングトリックを達成）、半分だけの要素に背景を設定して、200％に

Answer 2

1つのオプションは2つの要素を使用することです。一方はもう一方を含みます。

外側には実際のサイズと位置があります。内側のサイズは2倍のサイズになり、グラデーションは2回繰り返されます。外側の要素には、オーバーフロー：隠されて、その境界を越えて広がるものを隠すことになります。

次に、内側の要素の位置を外側に対してアニメーションします。

Answer 3

答えはjcaronです。 水平線のコピーを使用して、それらの線を隣り合わせに配置します。最初の線の前の最後の要素です。親要素は、hr要素の1つの2倍の幅にする必要があります。その後、親要素を簡単にアニメートすることができ、アニメーション内の線形グラデーションを再描画する必要はありません。最大限にあなたの構造を維持

@keyframes hr-animation { 
 
    from{ transform: translate(0, 0); } 
 
    to{ transform: translate(50%, 0); } 
 
} 
 
@-webkit-keyframes hr-animation { 
 
    from{ -webkit-transform: translate(0, 0); } 
 
    to{ -webkit-transform: translate(50%, 0); } 
 
} 
 
.hr-animation { 
 
    -webkit-animation: hr-animation 5s linear infinite; 
 
    animation: hr-animation 5s linear infinite; 
 
} 
 

 
body { 
 
    margin: 10px 0 0 0; 
 
    background: #555; 
 
} 
 

 
.colored { 
 
    background-image: linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: -moz-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: -o-linear-gradient(left, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
    background-image: linear-gradient(to right, #c4e17f, #c4e17f 12.5%, #f7fdca 12.5%, #f7fdca 25%, #fecf71 25%, #fecf71 37.5%, #f0776c 37.5%, #f0776c 50%, #db9dbe 50%, #db9dbe 62.5%, #c49cde 62.5%, #c49cde 75%, #669ae1 75%, #669ae1 87.5%, #62c2e4 87.5%, #62c2e4); 
 
} 
 

 
.container { 
 
    overflow: hidden; 
 
    width: 100%; 
 
} 
 

 
.wrap { 
 
    font-size: 0; 
 
    height: 5px; 
 
    width: 200%; 
 
    position: relative; 
 
} 
 

 
.wrap hr { 
 
    border: none; 
 
    height: 5px; 
 
    width: 50%; 
 
    position: absolute; 
 
} 
 

 
.wrap hr:last-child { 
 
    left: -50%; 
 
}

<div class="container"> 
 
    <div class="wrap hr-animation"> 
 
    <hr class="colored "> 
 
    <hr class="colored "> 
 
    </div> 
 
</div>