/* html */
html {
    width: 900px;
    margin-left: auto;
    margin-right: auto;
}

body {
    width: 900px;
    margin-left: auto;
    margin-right: auto;
    border-style: dotted;
    border-radius: 10px;
    padding: 30px;

}


/* ヘッダー */
header {
    background-color: rgb(255, 255, 255);
    width: 900px;
    position: fixed;
}

header h1 {
    margin: 0%;
}



/* ナビゲーションメニュー */
nav {
    background-color: ;
    margin-left: auto;
    margin-right: auto;
    width: 900px;
    text-align: right;
    margin-top: -55px;
    position:  fixed;
}

nav ul {
    
}

nav li {
    display: inline;
    list-style: none;

    
}

section {
    width: auto;
    padding-top: 100px;
    
}



#list-section ul {
    background-color: ;
    list-style: circle;
    padding: 0px;
}

list-section li {
    list-style: ;
}

.container {
    /* margin-left: auto;
    margin-right: auto;
    background-color: aqua; */
    width: 100%;
    min-width: 500px;
    border-left: solid 2px black;
}

b {
    padding-left: 5px;
}

.triangle {
    /* width: 50px; */
    height: 1px;
    border-top: solid 5px transparent;
    border-bottom: solid 5px transparent;
    border-left: solid 5px black;
    /* border-right: solid 25px #991772; */
}

p {
    padding-left: 10px;
}