section {
    color: rgb(79, 79, 79);
}

.about {
    padding: 110px 50px 50px 50px;
}

.introductionpc {
    display: none;
}

.introductionsp {
    display: block;
}

.introductionsp img {
    width: 100%;
    margin-bottom: 25px;
}

.picture {
    text-align: center;
}

.picture img {
    border-radius: 20px;
    width: 100%;
}

.skillscontents {
    display: none;
}

.skillscontentstb {
    display: none;
}

.skillscontentssp {
    display: block;
}

.skills {
    width: 80%;
    margin: auto;
    padding-bottom: 100px;
}

.skillscontentssp img {
    width: 100%;
}

.end {
    padding: 0px 50px;
    color: #a58957;
    font-size: 1.3em;
    margin-bottom: 100px;
    text-align: center;
}

.end p {
    line-height: 2em;
}

.end p a {
    font-weight: bold;
    font-size: 1.4em;
    color: #a58957;
    text-decoration: underline;
    text-underline-offset: 7px;
    text-decoration-color: rgb(255, 171, 171);
    text-decoration-thickness: 3px;
}

@media screen and (min-width:700px) {
    .introductionsp {
        text-align: center;
    }
    .introductionsp img {
        width: 75%;
    }
    .skillscontentssp {
        text-align: center;
    }
    .skillscontentssp img {
        width: 80%;
    }
}

@media screen and (min-width:900px) {
    .introductionsp {
        display: none;
    }
    .introductionpc {
        display: block;
        text-align: center;
    }
    .introductionpc img {
        width: 85%;
    }
    .picture {
        display: none;
    }
    .skills {
        width: 80%;
        margin: auto;
    }
    .skillscontentssp {
        display: none;
    }
    .skillscontents {
        display: none;
    }
    .skillscontentstb {
        display: block;
    }
    .skillscontentstb img {
        width: 100%;
    }
}

@media screen and (min-width:1200px) {
    .introductionpc img {
        width: 70%;
    }
    .skills {
        width: 70%;
    }
    .skillscontentssp {
        display: none;
    }
    .skillscontentstb {
        display: none;
    }
    .skillscontents {
        display: flex;
    }
    .skills {
        padding-bottom: 100px;
    }
    .skillscontents img {
        width: 100%;
    }
}