CSS 动画-渐变段落-按钮边框

渐变段落

<div style="background:#000">
    <p class="text-flowLight">
        我是一段文字，看看看我的效果
    </p>
</div>

.text-flowLight {
    position:relative;
    background-image:-webkit-linear-gradient(left,#1A3375,#b2c8ff,#1A3375 100%);
    -webkit-text-fill-color:transparent;
    -webkit-background-clip:text;
    -webkit-background-size:200% 100%;
    -webkit-animation:masked-animation 5s forwards linear infinite;
    font-weight:700;
    white-space:nowrap
}
@keyframes masked-animation {
  from {
    background-position:0 0
  }
  to {
      background-position:-200% 0
  }
}

按钮边框

<div class="rabut">
    <a href="###">炫酷边框特效</a>
</div>

body {
  background-color: black;
}
.rabut {
  width: 200px;
  height: 50px;
  color: #69ca62;
  /* 外面围绕的边框是真边框，眼睛看见的边框是阴影效果 */
  box-shadow: inset 0 0 0 1px rgba(105, 202, 98, 0.5);
  background-color: #0f222b;
}
.rabut {
  text-align: center;
  margin: 100px auto;
}
.rabut,
.rabut::before,
.rabut::after {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}
.rabut::before,
.rabut::after {
  content: "";
  margin: -5%;
  box-shadow: inset 0 0 0 2px;
  animation: clipMe 8s linear infinite;
}
.rabut::before {
  animation-delay: -4s;
}
.rabut:hover::after,
.rabut:hover::before {
  background-color: rgba(255, 0, 0, 0.3);
}
/* 核心：更改宽高后这下面的动画效果也需修改 */

@keyframes clipMe {
  0%,
  100% {
    /* 上 右 下  左*/
    /* 上-下=-2px，右-右=220px 显示盒子上边框 */
    clip: rect(0px, 220px, 2px, 0px);
  }
  25% {
    /* 上-下=-70px，右-右=2px 显示盒子左边框 */
    clip: rect(0px, 2px, 70px, 0px);
  }
  50% {
    /* 上-下=-2px，右-右=220px 显示盒子下边框 */
    clip: rect(68px, 220px, 70px, 0px);
  }
  75% {
    /* 上-下=-70px，右-右=2px 显示盒子右边框 */
    clip: rect(0px, 220px, 70px, 218px);
  }
}
.rabut a {
  font-size: 20px;
  line-height: 50px;
  text-decoration: none;
  color: #404d5b;
}