#stop {
    position: absolute;
    background: #0EFA03;/*ボタン色*/
    top: 500px;
    left: 320px;
    display: inline-block;
    padding: 0.5em 1em;
    text-decoration: none;
    color: #FFF;
    border-bottom: solid 4px #627295;
    border-radius: 3px;
}

#stop:active, #reset:active {
  /*ボタンを押したとき*/
  -webkit-transform: translateY(4px);
  transform: translateY(4px);/*下に動く*/
  box-shadow: 0px 0px 1px rgba(0, 0, 0, 0.2);/*影を小さく*/
  border-bottom: none;
}

#reset {
    position: absolute;
    background: #668ad8;/*ボタン色*/
    top: 560px;
    left: 320px;
    display: inline-block;
    padding: 0.5em 1em;
    text-decoration: none;
    color: #FFF;
    border-bottom: solid 4px #627295;
    border-radius: 3px;
}

.btn-square-shadow {
  background: #E91830 !important;
}