* {
    -webkit-box-sizing: border-box;
       -moz-box-sizing: border-box;
            box-sizing: border-box;
  }
  
  h1, p
  {
    text-align: center;
  }
  
  #clock {
    width: 100%;
    margin: 15% 20% auto 20%;
    background: #fff;
    text-align: center;
    overflow: hidden;
    
  }
  
  .clockItem {
    width: 15%;
    float: left;
    margin-right: 10px;
  }
  .clockObject {
    height: 100px;
    border-radius: 5px;
    background: #0b4f6a;
    display: block;
    color: #fff;
    font-size: 80px;
  }
  .clockTxt {
    clear: both;
    display: block;
  }