* {box-sizing: border-box;}
#container-viewbox {
    position: relative;
    top:300px;
    left:120px;
    width: 60%;
    min-width:300px;
    height: 150px;
    background-color: #eee;
}
#container-viewbox .container-view {
    width: 100%;
    height: 100%;
    transition: background-color 0.2s;
    /* background-color: bisque; */
}
#container-viewbox .container-view input {
    position: relative;
    left:10px;
    top:10px;
}
#container-viewbox .container-box {
    position: absolute;
    background-color: #CCC;
    display: none;
}

.my-hover-class {
    background-color:lightgreen;
}
.my-active-class {
    background-color:lightcoral;
}