ixon

//Считываем сообщение из поля ввода с id mess_to_add
var mess=$("#mess_to_send").val();

The .val() method is primarily used to get the values of form elements such as input, select and textarea. When called on an empty collection, it returns undefined.

overflow: hidden;
height: 170px;

.coin{
  display:block;
  background:url('https://2ch.hk/b/arch/2018-05-23/src/176403732/15270649403080.jpg');
  background-size: 100% 100%;
  width:120px;
  height:120px;
  border-radius:50%;
  animation:coin 5s infinite;
}

@keyframes coin {
    0%   {
      width: 120px;
      margin-left:0px;
    }
    50%  {
      width: 0px;
      margin-left:60px;
    }
    100% {
      width: 120px;
      margin-left:0px;
    }
}