@charset "UTF-8";

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

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    height: 100%;
}

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

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

nav ul {
    list-style: none;
    padding-bottom: 1rem;
    text-align: center;
}

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

nav ul li a {
    text-decoration: none;
    font-weight: bold;
    color: #333;
}

/* main contents */
main {
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    flex-grow: 1;
    display: grid;
    grid-template-columns: 1fr;
}

section {
    padding: 20px;
    background: #fff;
    width: 100%;
}

/*
.sec01 {
    grid-row-start: 1;
    grid-row-end: 2;
    grid-column-start: 1;
    grid-column-end: 2;
}

.sec02 {
    grid-row-start: 1;
    grid-row-end: 2;
    grid-column-start: 2;
    grid-column-end: 3;
}

.sec03 {
    grid-row-start: 2;
    grid-row-end: 3;
    grid-column-start: 1;
    grid-column-end: 3;
}
*/
.container {
    /* display: flex; */
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

/* 
.column-img {
  flex: 1;
}

.column-text {
  flex: 2;
}
 */

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

/*タブレット用*/
@media all and (min-width: 768px) {
    .container {
        grid-template-columns: 1fr 1fr;
    }
}

/*コンピュータ用*/
@media all and (min-width: 1024px) {
    header h1 {
        font-size: 4rem;
    }

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

    .sec01 {
        grid-row-start: 1;
        grid-row-end: 2;
        grid-column-start: 1;
        grid-column-end: 2;
    }

    .sec02 {
        grid-row-start: 1;
        grid-row-end: 2;
        grid-column-start: 2;
        grid-column-end: 3;
    }

    .sec03 {
        grid-row-start: 2;
        grid-row-end: 3;
        grid-column-start: 1;
        grid-column-end: 3;
    }

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