@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300&family=Ubuntu:wght@300&display=swap');

html,body {
  height: 100%;
  width: 100%;
  font-family: 'Roboto', sans-serif; 
  background: lightblue;
}

.button{
  width: 66px;
  margin: 0 3px;
  padding: 20px;
  border: 2px solid black;
  border-radius: 9px;
  cursor: pointer;
}

.row{
  margin: 8px 0;
}

.row input{
  border: 2px solid black;
  border-radius: 5px;
  padding: 10px 0;
  width: 290px;
  margin:0;
  font-size: 20px;
  
}
.row .button:hover{
 background-color:gray; 
  color: white;
  width: 68px;
}