* {
    box-sizing: border-box;
}

body{
    background-color: rgba(247,247,247,0.4);
}

.link-a{
    text-decoration: none;
    font-size: large;
    padding: 10px;
    border: #000 solid 1px;
    display: block;
    margin-top: 10px;
    color: #000;
    text-align: center;
    background-color: #f5f8fc;
    border-radius: 50px; 
    font-weight: 700;
}

.link-a:hover{
    box-shadow: 0 2px 4px 0 rgb(0 0 0 / 20%);
}

.link-a:nth-child(even) {
    background-color: #dfe9f7;
  }

.tab {
  float: right;
  border: 1px solid #ccc;
  background-color: #2d2d2d;
  width: 30%;
  box-shadow: 0 2px 4px 0 rgb(0 0 0 / 20%);
  border-left: none;
}

.tab button {
  display: block;
  background-color: inherit;
  color: #fff;
  padding: 22px 16px;
  width: 100%;
  border: solid 1px #fff;
  outline: none;
  text-align: right;
  cursor: pointer;
  transition: 0.3s;
  font-size: 17px;
}

.tab button:hover {
  background-color: #494b4d;
}

.tab button.active {
    background-color: #fff;
    color: #000;
}

.tabcontent {
  float: right;
  padding: 0px 12px;
  border: 1px solid #ccc;
  width: 70%;
  border-right: none;
  text-align: right;
  background-color: #fff;
}
/****************************************/
.nav{
    display: flex;
}
.nav .stubus a{
    text-decoration: none;
    color: #000;
}
.stubus{
    padding: 10px;
    flex-grow: 1;
    text-align: center;
    font-size: 32px;
    color: #000;
    text-shadow:
    0 0 5px #fff,
    0 0 10px #fff,
    0 0 20px #fff,
    0 0 40px #fff,
    0 0 80px #fff,
    0 0 90px #fff,
    0 0 100px #0ff,
    0 0 150px #0ff;
    text-decoration: none;
}
.icon-bars{
    font-size: 30px;
    padding: 10px;
    color: black;
    cursor: pointer;
    position: absolute;
}