<button>Click Me!</button>

button {
background-color: #4CAF50;
border: none;
color: white;
padding: 15px 32px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
margin: 4px 2px;
cursor: pointer;
}

以下是另一個按鈕樣式的代碼：

.button {
background-color: white;
color: black;
border: 2px solid #4CAF50;
}
.button:hover {
background-color: #4CAF50;
color: white;
}

<div id="button-container">
<button>Button 1</button>
<button>Button 2</button>
</div>

#button-container {
text-align: center;
}
#button-container button {
margin: 10px;
width: 150px;
}