.kv_header {
    position: relative;
    text-align: center;
    margin: 40px 10px 0;
    min-height: 100vh;
}

h1.title{
    position: absolute;
    left: 0;
    top: 0;
    z-index: 500;
    margin: 0;
}

h1.title img{
    width: clamp(180px, 24vw, 340px);
}

.main_view-copy {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    transform: translateY(-50%);
    text-align: center;
}

.main_view-copy-line {
    font-size: clamp(52px, 5.1vw, 92px);
    font-weight: 800;
    color: #fff;
    line-height: 1.4em
}

.main_view-copy-line-input {
    background: none;
    border: none;
    border-bottom: 4px solid #fff;
    width: 14ch;
    font-size: clamp(52px, 5.1vw, 92px);
    vertical-align: middle;
    caret-color: #4270ed;
    text-align: center;
    outline: none;
    box-shadow: none;
    display: inline-block;
    white-space: nowrap;
    overflow: hidden
}

.main_view-copy-line-input.input {
    font-size: clamp(52px, 5.1vw, 92px);
    border-bottom: 4px solid #fff;
}

.main_view-copy-line-input br {
    display: none
}

.main_view-copy-line-input::-webkit-input-placeholder {
    color: rgb(255 255 255 / 0.6)
}

.main_view-copy-line-input::placeholder {
    color: rgb(255 255 255 / 0.6)
}

.main_view-copy-line-input[contenteditable]:before {
    content: "input your name";
    color: rgb(255 255 255 / 0.6)
}

.main_view-copy-line-input[contenteditable].input:before {
    content: "";
    display: none
}

@media screen and (max-width: 1020px) {
  .kv_header {
    min-height: 100%;
  }
  .main_view-copy-line{
    font-size: clamp(24px, 6vw, 50px);
  }
  
  .main_view-copy-line-input, .main_view-copy-line-input.input {
    font-size: clamp(24px, 6vw, 50px);
  }
  .main_view-copy-line-input {
    width:14ch;
  }