.margin {
    margin: 50px;
    line-height: 1.5em;
}

.center {
    text-align: center;
}

.suisho_dousa_kankyo {
    list-style: none;
    text-align: center;
    font-size: 25px;
    line-height: 1.5em;
}

.title{
    line-height: 1;
}

.your_browser_btn {
    background-color: aquamarine;
}

.your_browser_btn:hover {
    opacity: 0.8;
}

.your_browser {
    font-size: 30px;
    font-weight: bold;
}

.h2{
    display: flex;
    justify-content: center;
    align-items: center;
}