body {
    background-color: aliceblue;
}

h1 {
    text-align: center;
    font-family: "Plaster", Verdana, Geneva, Tahoma, sans-serif;
    font-size: 14svw;
    line-height: 9svw;
    text-transform: uppercase;
    background-image: url(../images/consertpic.jpg);
    background-size: cover;
    background-position: 50% 10%;
    background-clip: text;
    color: transparent;
}

.three_boxes {
    margin: 150px auto;
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
}

.three_boxes div {
    flex: 0 0 20%;
    aspect-ratio: 1;
    border: 2px solid blue;
    border-radius: 0%;
    transform: rotate(-45deg);
    position: relative;
    overflow: hidden;
}

.three_boxes div figure {
    background-image: url(../images/consertpic.jpg);
    background-size: 350%;
    width: 145%; aspect-ratio: 1;
    transform: rotate(45deg);
    position: absolute;
    top: -23%; left: -23%;
}

.three_boxes div:nth-child(1) figure {
    background-position: 10% 20%;
}

.three_boxes div:nth-child(2) figure {
    background-position: 43% 20%;
}

.three_boxes div:nth-child(3) figure {
    background-position: 80% 20%;
}