header {
    background-color: #06f56e;
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
 
body {
    background-color: rgb(18, 240, 229);
    margin: 0;
    text-align: center;
    font-size: 1.2rem;
}
 
p {
    text-align: center;
}
 
.centered-list {
    list-style: none;
    padding: 0;
}
 
.centered-list li {
    text-align: center;
    padding: 5px 0;
}
 
iframe {
    border: solid 5px red;
}
 
iframe:hover {
    border: solid 5px blue;
}
.links li{
    cursor: pointer;
    text-decoration: underline;
    text-decoration-line:none ;
    text-decoration-thickness:none ;
    text-decoration-style: none;
    text-decoration-color:white ;
   
    }
.links li :visited{
    color: white;
}