.main-div{
  background-color: royalblue;
  }

  div3 {
    width: 100px;
    height: 100px;
    background: blue;
    position: relative;
    animation: mymove 15s infinite;
  }
  

form {
  border: 3px solid #f1f1f1;
}

@keyframes mymove {
  from {left: 0px;}
  to {left: 300px;}
}



/* Create three equal columns that floats next to each other */
.column {
  float: left;
  width:60%;
  padding: 10px;
  height: 626px; /* Should be removed. Only for demonstration */
  }
  .column-left {
  float: left;
  width: 20%;
  padding: 5px;
  height: 626px; /* Should be removed. Only for demonstration */
  }
  .column-right {
  float: left;
  width: 5%;
  padding: 10px;
  height: 626px; /* Should be removed. Only for demonstration */
  }
  @media only screen and (max-width: 600px) {
    .column{
      width: 100%;
    }
    .column-left {
      width: 100%;
    }
    .column-right {
      width: 100%;
    }
  }
  
.columns {
  float: left;
  width: 33.3%;
  padding: 2px;
}

@media screen and (max-width: 650px) {
  .columns {
    width: 100%;
    display: block;
  }
}

#entry-01{
    width: 100%;
    height: 740px;
    background-color:  bisque;
    border-radius: 50% 10% 10% 10%;
    margin-left: 14px;
  }
  
table, th, td {
  border:1px solid black;
}
#customers {
  font-family: Arial, Helvetica, sans-serif;
  border-collapse: collapse;
  width: 100%;
 margin-left: 130px;
 
}

#customers td, #customers th {
  border: 1px solid #ddd;
  padding: 3px;
}

#customers tr:nth-child(even){background-color: #f2f2f2;}

#customers tr:hover {background-color: #ddd;}

#customers th {
  padding-top: 12px;
  padding-bottom: 12px;
 margin-left: 45px;
  text-align: center;
  background-color: #ffa500;
  color: white;
}

#example1 {
  border: 2px solid black;
  padding: 25px;
  background: url(mountain.jpg);
  background-repeat: no-repeat;
  background-size: auto;
}

#example2 {
  border: 2px solid black;
  padding: 25px;
  background: url(mountain.jpg);
  background-repeat: no-repeat;
  background-size: 500px 100px;
}