.header {
  background-color: rgba(50, 50, 50, 0.9);
  position: fixed;  
  top: 0;
  width: 100%;
  height: 80px;
  z-index: 100;   
  display: flex;
  gap: 40px;
  align-items: center;   
  padding: 0px 30px;
  justify-content: space-between;
  display: flex;
  justify-content: space-between;
}
.logo{
  font-family: Tahoma, Helvetica, Arial, sans-serif;
  color: white;
  width: 60px;
  font-size: 16px;
  background-size: contain;
  background-repeat: no-repeat;
  padding-left: 20px;
}
.top-nav{
    display: flex;
  gap: 55px;
  align-items: center;
}
.top-nav a {

  position: relative;
  font-size: 16px;
  color: white;
  font-weight: 500;
  text-decoration: none;
    
}
.top-nav a::before{

  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 0;
  height: 2px;
  background: white;
  transition: 0.3s;


}

.top-nav a:hover::before{
  width: 100%;
}
.top-nav a:hover {
  text-shadow: 2px 2px 10px rgba(50, 231, 255, 1);
}