header {
    color: #ffffff;
    background-color: #181619;
}

body {
    font-family: "Noto Sans JP", sans-serif;
    background-image: url('../images/background.webp');
    background-position: center top;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: scroll; 
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

header .row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 90%;
    margin: 0 auto;
    max-width: 1280px;
    padding: 20px 0;
}

header .logo {
    font-size: 24px;
    font-weight: 700;
}

header nav ul {
    display: flex;
}

header nav ul li {
    margin-left: 50px;
}

.mv {
    background-position: center top;
    background-size: cover;
}

.mv .container {
    margin: 0 auto;
    max-width: 1280px;
    height: 976px;
    position: relative;
}

.mv .title {
    position: absolute;
    bottom: 650px;
    left: 0;
}

.mv h1 {
    font-size: 70px;
    font-weight: 900;
    color: #70c4ff;
    margin-bottom: 10px;
    transform: translate(0px, -88px);
}

.mv p {
    font-size: 40px;
    font-weight: 700;
    color: #70c4ff;
    transform: translate(0px, -100px);
}

.mv .about {
    position: absolute; 
    bottom: -180px;      
    left: 0;            
    font-size: 24px;
    font-weight: 900;
    color: #70c4ff;
    margin-bottom: 10px;
    transform: translate(0px, 158px);
}

.mv .about_me p {
    font-size: 20px;
    font-weight: 700;
    color: #70c4ff;
}

.mv .info {
    position: absolute; 
    bottom: -536px;      
    left: 0;            
    font-size: 15px;
    font-weight: 900;
    color: #70c4ff;
}