.ImprovementFrame {
    padding: 0 !important;
}

.ImprovementFrame .Improvement {
    width: 100%;
    aspect-ratio: 1 / 1;
    background-size: 90%;
    background-position: center;
    background-repeat: no-repeat;
}

.Level1 {
    background: url("../img/改善度/1.png");
    background-color: #B5E6A2;
}

.Level2 {
    background: url("../img/改善度/2.png");
    background-color: #DAF2D0;
}

.Level3 {
    background: url("../img/改善度/3.png");
    background-color: #C0E6F5;
}

.Level4 {
    background: url("../img/改善度/4.png");
    background-color: #FBE2D5;
}