body{
  background-color: lightgray;
}

.column_menu{
  text-align: center;
}

.contact{
  width: 100%;
  height: 100%;
}
.split {
  height: 100%;
  /* width: 50%; */
  position: fixed;
  z-index: 1;
  top: 0;
  overflow-x: hidden;
  padding-top: 20px;
}

.left {
  width: 30%;  
  left: 0;
  background-color: #111;
}

.right {
  position: absolute;
  left: 35%;
  right: 0;
  background-color: lightgray;
}

.centered {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.img_logo{
  width: auto;
  max-width: 20%;
  height: auto;
  max-height: 20%;
}

.contact{
  
  width: 80%;
 
}

.btn_send{
  width: 80%;
  height: 50px;
  background-color: greenyellow;
}

.menu {
  width:auto;
  max-width: 80%; 
  /* height: auto;  */
  right: 0;
  left: 20%;
  background-color: lightgray;
  
}

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #2fdef5;
  
}

li {
  float: left;
  
}

li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover {
  background-color: #16da78;
  
}