响应式视图中覆盖的部分图像

Question

我有一个使用 CSS 蒙版创建的图像动画，但由于某种原因，img 上的媒体查询的 max-width: 100%; 属性隐藏/覆盖了图像的一部分。如果我删除它，它会正常显示，但图像没有响应。

代码/演示可以在这里找到（调整结果窗口大小以重现）：http://jsfiddle.net/x2hnomhs/。

任何帮助将不胜感激。谢谢！

Answer 1

把height:auto改成height:100%@media screen and (max-width: 940px)

sn-p:

.logo {
  display: block;
  width: 450px;
  margin: 0 auto;
  padding-bottom: 40px;
}
.logo a {
  display: block;
  height: 288px;
  overflow: hidden;
  width: 450px;
  position: relative;
}
.logo a img.logoMask {
  position: relative;
  z-index: 20;
  width: 100%;
  height: auto;
}
.logo a img.color {
  position: absolute;
  z-index: 1;
  left: 0;
  top: 3px;
  -webkit-animation: logoColor 15s infinite; /* Chrome, Safari, Opera */
  animation: logoColor 15s infinite;
}

/* Chrome, Safari, Opera */
@-webkit-keyframes logoColor {
  0% {
    left: 0;
  }
  50% {
    left: -2500px;
  }
  100% {
    left: 0;
  }
}
/* Standard syntax */
@keyframes logoColor {
  0% {
    left: 0;
  }
  50% {
    left: -2500px;
  }
  100% {
    left: 0;
  }
}
@media screen and (max-width: 940px) {
  img {
    max-width: 100%;
    height: 100%;
  }
}

<div class="logo">
  <a style="padding-right: 0">
    <img src="http://api.marioparra.me/img/api-logo-mask.png" class="logoMask" />
    <img src="http://api.marioparra.me/img/api-logo-gradient.png" class="color" />
  </a>

</div>

更新：基于 OP cmets（阐明 OP 真正想要实现的目标）

由于您想在所有视口大小中创建相同类型的 animation 并使其具有响应性，因此这里是一个 sn-p（添加了 cmets 以解释更改）：

.logo {
  display: block;
  max-width: 450px;
  /* changed from width to max-width */
  margin: 0 auto;
  padding-bottom: 40px;
  overflow: hidden;
  /* added this */
}
.logo a {
  display: block;
  height: 288px;
  overflow: hidden;
  max-width: 450px;
  /* changed from width to max-width */
  position: relative;
}
.logo a img.logoMask {
  position: relative;
  z-index: 20;
  width: 100%;
  height: auto;
}
.logo a img.color {
  position: absolute;
  z-index: 1;
  left: 0;
  top: -50%;
  /* changed from 3px to -50% */
  -webkit-animation: logoColor 5s infinite;
  /* Chrome, Safari, Opera */
  animation: logoColor 5s infinite;
}
/* Chrome, Safari, Opera */

@-webkit-keyframes logoColor {
  0% {
    left: 0;
  }
  50% {
    left: -2500px;
  }
  100% {
    left: 0;
  }
}
/* Standard syntax */

@keyframes logoColor {
  0% {
    left: 0;
  }
  50% {
    left: -2500px;
  }
  100% {
    left: 0;
  }
}
/*removed uncessary media queries because you are using now max-width in your parent container , with that your img {width:100%} it is enough to make it responsive. */

@media screen and (max-width: 480px) {
  .logo a img.color {
    top: -60%
  }
}
@media screen and (max-width: 360px) {
  .logo a img.color {
    top: -72%
  }
}

<div class="logo">
  <a style="padding-right: 0">
    <img src="http://api.marioparra.me/img/api-logo-mask.png" class="logoMask" />
    <img src="http://api.marioparra.me/img/api-logo-gradient.png" class="color" />
  </a>
</div>

Answer 2

我真的想通了。希望这是您正在寻找的：

http://jsfiddle.net/x2hnomhs/2/

.logo {
    display: block;
    max-width: 450px;
    width: auto;
    margin: 0 auto;
    overflow: hidden;
}

.logo a {
    display: block;
    height: 100%;
    width: 100%;
    position: relative;    
}

.logo a img.logoMask {
    position: relative;
    z-index: 20;
    width: 100%;
    display: block;
    height: auto;
}

.logo a img.color {
    position: absolute;
    z-index: 1;
    left: 0;
    top: 3px;
    -webkit-animation: logoColor 15s infinite; /* Chrome, Safari, Opera */
    animation: logoColor 15s infinite;
}

/* Chrome, Safari, Opera */
@-webkit-keyframes logoColor {
    0%   {left: 0;}
    50%  {left: -2500px;}
    100% {left: 0;}
}

/* Standard syntax */
@keyframes logoColor {
    0%   {left: 0;}
    50%  {left: -2500px;}
    100% {left: 0;}
}