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<section>
  <div class="container">
    <div class="background-img">
      <div class="box">
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <div class="content">
          <img class="logo"  src="http://cdn.jsrun.top/avatar/1803_1487940527958.png" >  
          <h2>极客少年博客</h2>
          <p><a href="https://www.jikesn.com/" style="color:#00ffe9;" target="_blank">www.jikesn.com</a><br><br>自古英雄出少年,现代少年多极客。</p>
        </div>
        
      </div>
    </div>
  </div>
</section>
* {
    margin: 0;
    padding: 0;
}

.container {
    padding-top: 20px;
    padding-bottom: 20px;
}

body {
    background-color: #111845;
}

.background-img {
    background-image: url("https://3.bp.blogspot.com/-piZWCW2uUbg/W2fPXxkWZgI/AAAAAAAAOu0/eydmMjTIqcwLMHEEr2H7imqoRTxMw4o9QCLcBGAs/s1600/among_trees_night_dribbble.png");
    height: 400px;
    width: 400px;
    background-repeat: no-repeat;
    background-size: cover;
    margin: 5% auto;
    padding: 20px;
    border: 1px solid #2a3cad;
    border-radius: 4px;
    box-shadow: 0px 0px 5px #2a3cad;
    position: relative;
}

.content h2 {
    font-size: 19px;
}

.box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: #111845a6;
    box-sizing: border-box;
    overflow: hidden;
    box-shadow: 0 20px 50px rgb(23, 32, 90);
    border: 2px solid #2a3cad;
    color: white;
    padding: 20px;
}

.box:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: 0.5s;
    pointer-events: none;
}

.box:hover:before {
    left: -50%;
    transform: skewX(-5deg);
}

.box .content {
    position: absolute;
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    border: 1px solid #f0a591;
    padding: 20px;
    text-align: center;
    box-shadow: 0 5px 10px rgba(9, 0, 0, 0.5);
}

.box span {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
    box-sizing: border-box;
}

.box span:nth-child(1) {
    transform: rotate(0deg);
}

.box span:nth-child(2) {
    transform: rotate(90deg);
}

.box span:nth-child(3) {
    transform: rotate(180deg);
}

.box span:nth-child(4) {
    transform: rotate(270deg);
}

.box span:before {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: #50dfdb;
    animation: animate 4s linear infinite;
}

@keyframes animate {
    0% {
        transform: scaleX(0);
        transform-origin: left;
    }
    50% {
        transform: scaleX(1);
        transform-origin: left;
    }
    50.1% {
        transform: scaleX(1);
        transform-origin: right;
    }
    100% {
        transform: scaleX(0);
        transform-origin: right;
    }
}