* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.box {
    width: 300px;
    height: 200px;
    background-color: lightblue;
    padding: 20px;
    border: 5px solid blue;
    margin: 30px;
display: inline-block;

}
.container{
    width: 100%;
    height: 400px;
   
    display: flex;
    flex-direction: row;

}
.box:hover{
    background-color: lightgreen;
    border-color: green;
}
button:hover{
    background-color: red;
    color:aqua;
   
}
button{
    padding: 10px 20px;
    background-color: white;
    border: none;
    height: 50px;
    width: 100px;
    border: 2px solid black;
    border-radius: 20px;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
a {
    text-decoration: none;
    color: black;
    font-weight: bold;
}