#app {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    flex-wrap: wrap;

}
#quadr {
    position: relative;
    width: 500px;
    height: 500px;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
}
#car {
    width: 1500px;
    height: 500px;
    line-height: 50px;
    background-color: #d0d0d0;
    color: #000;
    text-align: center;
    margin: 0 auto;
    position: relative;
}

.square {
    width: 250px;
    height: 200px;
    /*background-color: #456fff; !* Цвет фона *!*/
    /*margin: 20px;*/
    /*cursor: pointer;*/
    border: 3px solid black;
    background-color: floralwhite;
    cursor: pointer;
    position: absolute;
    flex-shrink: 0;
}

.square_1 {
    width: 50px;
    height: 200px;
    background-color: #456fff; /* Цвет фона */
    cursor: pointer;
    position: absolute;
    flex-shrink: 0;

}

.square_2 {
    width: 100px;
    height: 40px;
    background-color: #f447ff; /* Цвет фона */
    cursor: pointer;
    position: absolute;
    flex-shrink: 0;

}

.square_3 {
    width: 50px;
    height: 90px;
    background-color: #456fff; /* Цвет фона */
    cursor: pointer;
    position: absolute;
    flex-shrink: 0;

}

.cont {
    height: 80px;
    flex-shrink: 0;
}