app/components/Header.css

.header{
    background-color: rgba(0, 0, 0, 0);
    color: white;

    border:none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.233); /* Changed border-bottom style to solid and specified border-color */
}

@media screen and (max-width: 600px) {
    .links{
        display: none;
    }
}

a{
    margin-left: 20px;
    transition-duration: 300ms;
    font-size: medium;
  }
  
  a:hover{
    background: linear-gradient(to right, #00c8ff, #2635c1);

    color: white;
    padding: 10px;
    border-radius: 10px;
  }

  

.sidenav {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
  }
  
  .sidenav a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 25px;
    color: #ffffff;
    display: block;
    transition: 0.3s;
  }
  
  .sidenav a:hover {
    color: #808080;
  }
  
  .sidenav .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
  }
  
  
.menubtn{
  display: none;
}  

@media screen and (max-width: 600px) {
  .menubtn{
    display: block;
  }
}