* {
   font-family: Arial;
   margin: 0;
   padding: 0;
   box-sizing:border-box;
}

h2 {
    font-size: 1.5rem;
    margin-top: 0;           
    margin-bottom: 0;
}

.cal td {
    vertical-align: text-top;
}

/* Header */

.header {
   position: fixed;
   top: 0;
   left: 0;
   width: 100%;
   padding: 1.3rem, 10%;
   background-color: rgba(0, 0, 0, .1);
   backdrop-filter: blur(50px);
   display: flex;
   flex-wrap: nowrap;
   justify-content: space-between;
   align-items: center;
   z-index: 100;
}

.header::before {
   content: '';
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   background-color: rgba(0, 0, 0, .1);
   backdrop-filter: blur(50px);
   z-index: -1;
}

.logo {
   font-size: 2rem;
   color: white;
   text-decoration: none;
   font-weight: 700;
}

/* Links inside the navbar */

.navbar a {
  font-size: 1.15rem;
  font-weight: 500;
  text-decoration: none;
  color: white;
  margin-left: 2.5rem;
}

#check {
  display: none;
}

.icons {
  position: absolute;
  right: 0;
  color: black;
  cursor: pointer;
  display: none;
}

@media (max-width: 970px) {
  .icons {
      display: inline-flex;
  }

  .navbar {
      position: absolute;
      top: 100%;
      left: 0;
      width: 100%;
      height:  0;
      background-color: rgba(0, 0, 0, .1);
      backdrop-filter: blur(50px);
      overflow: hidden;
      flex-direction: column;
  }

  #check:checked~.navbar {
      height:  17.7rem;
  }

  .navbar a {
      display: block;
      font-size: 1.1rem;
      margin: 1.5rem 0;
      text=align: left;
  }
}

/* Change background on mouse-over */

.navbar a:hover {
  color: grey;
}

/* Main content */

.main {
  margin-top: 50px; /* Add a top margin to avoid content overlay */
  margin-left: 0;
  padding: 0;
  overflow: hidden;
}

/* Links inside the main */
  
.main ul {
   list-style-type: none;
   margin: 0;
   padding: 0;
}

.main a {
   color: black;
}

.main a:hover {
   color: grey;
}