div{
    width: 90%;
    height: 100px;
    margin: 20px auto;
    padding: 40px;
    border: 2px solid black;
    box-sizing: border-box;
    background-color: orange;
}

.d1{
    transition-property: background-color;
    transition-duration: 5s;
}
.d2{
    transition-property: background-color, border;
    transition-duration: 5s;
}
.d3{
    transition-property: all;
    transition-duration: 5s;
}
.d1:hover, .d2:hover, .d3:hover{
    background-color: blue;
    border: 5px solid red;
    color: white;
}