*{
  box-sizing: border-box;
}
.head
{
 background-color:#1b7d1b;
 padding:15px;
 text-align: left;
line-height: 6px;
 color: #0c0d0d;
}
.menu {
  float:left;
  width:20%;
  text-align:center;
}
.menu a {
  background-color:#e5e5e5;

  padding:8px;
  margin-top:7px;
  display:block;
  width:100%;

  color:black;
}

.logo
{
  width: 100px;
height: 100px;
float: left;
background-image: url(images/logo.png);
background-size: 100% 100%;
margin-left: 371px;
margin-top: 17px;
padding-right: 61px;
margin-right: 10px;
}
.login
{
  color: #b44848;
width: 328px;
height: auto;
border: none;
float: left;
margin-top: 83px;
margin-left: 510px;
background-color: #00000059;
padding-left: 13px;
padding-right: 13px;
padding-top: 13px;
padding-bottom: 13px;
}
.main {
  float:left;
  width:100%;
    height: 461px;
  padding:0 20px;
   background-image: url('images/1.jpeg');
}
.right {
  background-color:#e5e5e5;
  float:left;
  width:20%;
  padding:15px;
  margin-top:7px;
  text-align:center;
}

@media only screen and (max-width:620px) {
  /* For mobile phones: */
  .menu, .main, .right {
    width:100%;
  }
}