* {
  box-sizing: border-box;
}
.menu {
  float:left;
  width:20%;
  text-align:center;
}
.menu a {
  background-color:#e5e5e5;
  padding:8px;
  margin-top:7px;
  display:block;
  width:100%;
  color:black;
}
.main {
  align-self:center;
  width:100%;
  padding:0 20px;
}
.right {
  background-color:#e5e5e5;
  float:left;
  width:20%;
  padding:15px;
  margin-top:7px;
  text-align:center;
}

.button {
  border-radius: 4px;
  background-color: #b4e5bc;
  border: none;
  color: #00000;
  text-align: center;
  font-size: 20px;
  padding: 20px;
  width: 200px;
  transition: all 0.5s;
  cursor: pointer;
  margin: 5px;
}

.button span {
  cursor: pointer;
  display: inline-block;
  position: relative;
  transition: 0.5s;
}

.button span:after {
  content: '\00bb';
  position: absolute;
  opacity: 0;
  top: 0;
  right: -20px;
  transition: 0.5s;
}

.button:hover span {
  padding-right: 25px;

}

.button:hover span:after {
  opacity: 1;
  right: 0;
}

.outPopUp {
  position: absolute;
  width: 300px;
  height: 200px;
  z-index: 15;
  top: 50%;
  left: 50%;
  margin: -100px 0 0 -150px;
  background: red;
}

.history{

  position: relative; 
  z-index: 1;
  background: #FFFFFF;
  border-radius: 12px;

  margin: 100px;
  padding: 45px;
  text-align: center;
  box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.2), 0 5px 5px 0 rgba(0, 0, 0, 0.24);

}

.portcard {
  border-radius: 5px;
  background-color: #f2f2f2;
  padding: 20px;
}

@media all and (max-width:30em){
 .circle-btn{
  display:block;
  margin:0.4em auto;
 }
}

@media only screen and (max-width:620px) {
  /* For mobile phones: */
  .menu, .main, .right, {
    width:100%;
  }
}