body {
    background-color: #f5c8cc;
    margin: 0;
    font-family: "Noto Serif JP", serif;
    font-weight: 650;
    font-size: clamp(16px, 3vw, 20px);
    text-align: center;
}

#kasamasi {
    position: sticky;
    right: 20px;
    bottom: 0;
    width: 25%;
    display: flex;
    align-items: flex-start;
    margin-left: auto;
    z-index: 1000;
    padding: 0;
    justify-content: end;
    font-size: 80%;
    white-space: nowrap;
}
#kasamasi img {
    width: 3em;
    height: auto;
    display: block;
}

h2 {
    color: #be3333;
    background-color: white;
    width: fit-content;
    margin: 5vh auto;
    border-radius: 20px;
    padding: 0.3em 1em;
}
h3 {
    background-color: white;
    width: fit-content;
    border-radius: 20px;
    padding: 0.3em 1em;
    margin-bottom: 0;
}
.text {
    margin: 5vh auto;
    width: 80%;
    text-align: left;
}
.text p {
    margin-top: 0.5em;
}
.last {
    margin-bottom: 10vh;
}

footer {
    margin-bottom: 0;
    padding-top: 3vh;
    padding-bottom: 1px;
    background-color: white;
    width: 100%;
}
.link-text {
    color: black;
    position: relative;
    text-decoration: none;
}
.link-text::before {
    content: "";
    position: absolute;
    white-space: nowrap;
    left: -1em;
    bottom: 0.2em;
    transform: rotate(90deg);
    border-width: 0.5em;
    border-style: solid;
    border-color: black transparent transparent;
}