li#on{
    display: inline;
}

ul{
    color: red;
}

/* idセレクタは要素の後に"#~~"をつける*/
/* classセレクタに対しては.~~をつける*/
/*疑似クラス
要素；link リンク先をまだ見ていない状態のa要素
要素：visited　リンク先をすでに見た状態のa要素
要素:hover　カーソルが上にある状態の要素
要素:active　マウスのボタンなどが押されている場合の要素
*/
#page{
    margin:0;
    width: 100%;
}

#contents{
    display: block;
    float:left;
    width:70%;
    background-color: antiquewhite;
}
#main{
    float:left;
    width:50%;
    color:#888;
    background-color: #eee;
}
#sub1{
    float:right;
    width:50%;
    color:#fff;
    background:#390;
}
#sub2{
    margin-bottom: 30px;
    float:right;
    height: 30vh;
    width:30%;
    color:#fff;
    background:#fc0;
}

#page2{
    margin:0;
    width: 100%;
}

#contents2{
    display: block;
    float:left;
    width:70%;
    background-color: antiquewhite;
}
#main2{
    float:left;
    width:50%;
    color:#888;
    background-color: #eee;
    border: 2.0px solid #000;
}
#sub12{
    float:right;
    width:50%;
    color:#fff;
    background:#390;
}
#sub22{
    margin-bottom: 30px;
    float:right;
    height: 30vh;
    width:30%;
    color:#fff;
    background:#fc0;
}

#page3{
    margin:0;
    width: 100%;
}

#contents3{
    display: block;
    float:left;
    width:70%;
    background-color: antiquewhite;
}
#main3{
    float:left;
    width:50%;
    color:#888;
    background-color: #eee;
    border: 2.0px solid #000;
    box-sizing: border-box;
}
#sub13{
    float:right;
    width:50%;
    color:#fff;
    background:#390;
}
#sub23{
    margin-bottom: 30px;
    float:right;
    height: 30vh;
    width:30%;
    color:#fff;
    background:#fc0;
}


p#float_ps{
    clear: both;
    margin-bottom: 30px;
    color: red;
}



.fbox > div{
    border-radius: 5px;
    border:2px solid rgb(79,185,227);
    background-color: rgb(207,232,220);
    padding: 1em;
}
.fbox{
    clear: both;/*floatの解除*/
    display: flex;
    margin-bottom: 10px;
}

.fbox2 > div{
    
    border-radius: 5px;
    border:2px solid rgb(79,185,227);
    background-color: rgb(207,232,220);
    padding: 1em;
    flex: 1;
}
.fbox2{
    display: flex;
    margin-bottom: 30px;
    
}

.grid{
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 100px 100px;
    grid-row-gap: 10px;
    margin-bottom: 20px;
}

.grid > div{
    border-radius: 5px;
    background: rgb(207,232,220);
    border: 2px solid rgb(79,185,227);
    padding: 1em;
}
.gridbox1 {
    grid-column: 2/4;
    grid-row: 1;
}
.gridbox2 {
    grid-column: 1;
    grid-row: 1/3;
}
.gridbox3 {
    grid-row: 2;
    grid-column: 3;
}

.floatbox {
    float: left;
    width: 150px;
    height:10px;
    margin-right: 30px;
    margin-bottom: 0px;
    background: rgb(207,232,220);
    border: 2px solid rgb(79,185,227);
    border-radius: 5px;
    padding: 1em;
}
p2{
    clear: both;
    margin-top: 50px;
    margin-bottom: 100px;
   
}

p{
    background-color: rgb(2070,232,220);
    border: 2px solid rgb(79, 185, 227);
    padding: 10px;
    margin: 10px;
    border-radius: 5px;
    clear: both;
}
.relative-positioned{
    position: relative;
    background: rgba(255,84,104,.3);
    border: 2px solid rgb(255,84,104);
    top: 30px;
    left: 30px;
}

.fixed-positioned{
    position: fixed;
    background: rgba(255,84,104,.3);
    border: 2px solid rgb(255,84,104);
    top: 50vh;
    left: 10px;
}

.sticky-positioned{
    position: sticky;
    background: rgba(255,84,104,.3);
    border: 2px solid rgb(255,84,104);
    top: 50vh;
    left: 30px;
}

h3{
    clear: both;
    position: relative;
    margin-left: 20px;
}

p4{
    display: block;
}
.container{
    column-width: 300px;
    margin-bottom: 100px;
    background-color: antiquewhite;
}

#navi-training2 li {
    display: block;
    float:left;
    margin: 5px;
}

#navi-training2 li a{
    color: #fff;
    background: rgb(51, 0, 255);
}

#navi-training3 li {
    display: block;
    float:left;
}

#navi-training3 li a{
    color: #fff;
    background: rgb(51, 0, 255);
    display: block;
    line-height: 1.5;
    padding: 10px 5px;
    border-radius: 10px;
    border-left: 1px solid #fff;
    text-align: center;
    text-decoration: none; /*リンクの下線コントロール*/
 
}

.divgazou2{
    width: 50%;
    display: flex;
    flex-direction: column;
}

.divgazou2 img{
    width: 100%;
}

.divgazou2 p5 {
    width: fit-content;
    margin-right: auto;
    margin-left: auto;
}


.gazougrid{
    display: flex;
}

.divgazou3{
    width: 50%;
    display: flex;
    flex-direction: column;
}

.divgazou3 img{
    width: 100%;
}

.divgazou3 p5 {
    width: fit-content;
    margin-right: auto;
    margin-left: auto;
}

/*---------------------------*/
.gazougrid2{
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    /*grid-template-rows: 200px 100px;*/
    grid-row-gap: 10px;
    margin-bottom: 20px;
}
.gazougrid2>div{
    width: 100%;
    display:flex;
    flex-direction: column;
}
/*.gazougrid2{
    display: flex;
}*/

/*.divgazou4{
    width: 50%;
    display: flex;
    flex-direction: column;
}*/

.divgazou4 img{
    width: 98%;
    margin-right: auto;
    margin-left: auto
    ;
}

.divgazou4 p5 {
    width: fit-content;
    margin-right: auto;
    margin-left: auto;
}

pre{
    color: #fff;
    background-color: #000;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    width: 80%;
    margin-right: auto;
    margin-left: auto;

}

#gridingrid{
    display: grid;
    grid-template-columns: 1fr 1fr;
}

#gridingrid > div{
    width: 100%;
    display:flex;
    flex-direction: column;
}

/*line-height(行間調整) 
        1.単位付き数値指定
            ((line-height)-(font-size))/2=font上下余白
        2.数値のみ指定
            ((fontsize*数値)-(font-size))/2=font上下余白
        3.％指定
            ((fontsize*%)-(font-size))/2=font上下余白
    */
/*padding指定例
        上下左右　  padding: 10px;
        上下　左右  padding: 10px 20px;
        上 左右 下  padding: 10px 20px 30px;
        上 右 下 左 Padding: 10px 20px 30px 40px;
    */