body {
  background-color: #282C34;
  color: white;
}
a:link{
  color: white;
}
a:visited{
  color: white;
}
nav{
  background: #000;
  height: 36px;
  width: 100%;
  position: fixed;
  top: 0;
  left: 0
}
nav ul{
  list-style: none;
  margin: 0 auto;
  padding: 0;
  width: 100%;
  max-width: 1200px;
}
nav ul li{
  position: relative;
  float: left;
  width: 25%;
  text-align: center;
}
nav ul li:hover ul{
  display: block;
}
nav ul li li{
  position: relative;
  float: none;
  width: 100%;
  border: none
}
nav ul li a{
  display: block;
  text-decoration: none;
  color: #ffffff;
  padding: 6px 25px;
  font-size: 1.2en;
}

nav ul li:hover a{
  background: #fff;
  color: #000;
  text-decoration: none;
  transition: 0.5s;
}

.cal{
  text-align:center;
}

.img{
  text-align:center;
}

.minimal-button {
  padding: 8px 16px;
  border: none;
  background-color: #f1f1f1;
  color: #333;
  font-size: 14px;
  cursor: pointer;
}

.minimal-button:hover {
  background-color: #ddd;
}