* {
    background-image: linear-gradient(rgb(138, 239, 255), rgb(81, 191, 255), rgb(197, 73, 158));
    box-sizing: border-box;
  }

img {
    max-width: 100%;
}

.container {
    background: rgb(220, 220, 220);
    background-image: linear-gradient(
        45deg,
        #c0c0c0 25%,
        transparent 25%,
        transparent 75%,
        #c0c0c0 75%,
        #c0c0c0    
    ),
    linear-gradient(
        -45deg,
        #c0c0c0 25%,
        transparent 25%,
        transparent 75%,
        #c0c0c0 75%,
        #c0c0c0
      );
      background-size: 60px 60px;
      background-repeat: repeat;

    border: 5px solid;
    padding: 20px;
    width: 1000px;
    height: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: row-reverse;
    flex-wrap: wrap;
    align-content: space-between;
}

.a, .b, .c, .d, .e, .f, .g, .h{
    border: 1px solid;
    padding: 20px;
    background: white;
}

.a {
    background: white;
    width: 150px;
    height: 400px;
    display: flex;
    justify-content: flex-end;
    
}

.bumper-1 {
    opacity: 0;
    width: 800px;
    height: 150px;
}

.b {
    width: 350px;
    height: 200px;
}

.c {
    width: 350px;
    height: 200px;
}

.bumper-2 {
    opacity: 0;
    width: 200px;
    height: 150px;
}

.d {
    width: 300px;
    height: 150px;
}

.e {
    width: 300px;
    height: 150px;
}

.f {
    width: 350px;
    height: 150px;
}