@charset "UTF-8";

* {
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
    box-sizing: border-box;
}

body {
    height: 100%;
}

#wrap {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow: hidden;
}

html {
    font-size: 10px;
}

img {
    width: 100%;
    height: auto;
    vertical-align: bottom;
}

header {
    background: #f8f4e6;
    position: relative;
}

header h1 {
    font-size: 2rem;
    text-align: center;
    padding: 1rem;
}

nav {
    /*display: none;*/
    height: 100vh;
    width: 300px;
    position: absolute;
    top: 0;
    right: -300px;
    z-index: 50;
    background-color: rgba(67, 139, 202, 0.866);
    transition: transform .5s;
}

#navBtn {
    display: none;
}

.open {
    cursor: pointer;
    position: absolute;
    top: 10px;
    right: 10px;
    display: block;
    z-index: 100;
    width: 40px;
    height: 40px;
    border: 1px solid #FFF;
    border-radius: 2px;
}

.open::before,
.open::after {
    content: "";
}

.open span,
.open::before,
.open::after {
    content: "";
    position: absolute;
    top: 18px;
    left: 30%;
    width: 40%;
    border-bottom: 2px solid #555;
    transition: transform .5s;
}

.open::before {
    transform: translateY(-8px);
}

.open::after {
    transform: translateY(8px);
}

/*close button*/
#navBtn:checked + .open {
    background: #555;
}

#navBtn:checked + .open span {
    transform: scaleX(0);
}

#navBtn:checked + .open::before {
    transform: rotate(45deg);
}

#navBtn:checked + .open::after {
    transform: rotate(-45deg);
}

#navBtn:checked + .open span,
#navBtn:checked + .open::before,
#navBtn:checked + .open::after {
    border-bottom-color: #EEE;
}

#navBtn:checked ~ nav {
    display: block;
    transform: translateX(-300px);
}

nav ul {
    padding-bottom: 1rem;
    margin: 0;
    text-align: center;
}

nav ul li {
    /*display: inline-block;*/
    margin: 0 10px;
    padding: 10px 0;
}

nav ul li a {
    font-weight: bold;
    color: #333;
    color: rgb(255, 255, 255);
}

main {
    grid-template-columns: 1fr;
    padding: 1rem;
    max-width: 1000px;
    margin: 0 auto;
    flex-grow: 1;
    display: grid;
}  

section {
    background: #FFF;
    padding: 20px;
}

h2 {
    color: a;
    font-weight: yellow;
    border-left: 10px yellow solid;
    padding-left: 0.25rem;
    margin-bottom: .5rem;
}

.container {
    /*display: flex;*/
    grid-template-columns: 1fr;
    display: grid;
    gap: 20px;
}

footer {
    background: #333;
    color: #FFF;
    text-align: center;
    padding: 1rem;
    width: 100%;
}

/*タブレット用*/
@media all and (min-width: 600px) {
    .container {
        grid-template-columns: 1fr 1fr;
    }
}

/*コンピュータ用*/
@media all and (min-width: 1025px) {

    nav {
        display: block
    }

    #navBtn,
    .open {
        display: none;
    }

    header h1 {
        font-size: 4rem;
    }

    main {
        grid-template-columns: 1fr 1fr;
    }

    .container {
        grid-template-columns: 1fr 1fr 1fr;
    }

}