button {
background-color: #4CAF50;
color: white;
padding: 10px 20px;
border: none;
border-radius: 5px;
cursor: pointer;
font-size: 16px;
text-align: center;
button:hover {
background-color: #3e8e41;
display: block;
margin: 0 auto;
width: 20px;
height: 20px;
font-size: 12px;
border: 2px solid #4CAF50;
border-radius: 4px;
cursor: pointer;
background-color: #4CAF50;
background-color: #3e8e41;