<form> <div> <input type="text" placeholder="username"/> </div> <div> <input type="password" placeholder="password"/> </div> <div> <button type="submit">login</button> </div> </form> style above form

.container{
    width: 50%;
}

.container div{
    margin: 10px;
}

.container div input{
    width: 100%;
    padding: 5px;
}

.container div button{
    width: 100%;
}

.container div input:focus{
    background-color: #ccc;
}