html,body{
    height: 100%;
}

body {
    text-align: center;
    font-family: 'Kiwi Maru' , serif;
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
}
#main {
    flex:1;
}
.container {
    display: flex;
    flex-wrap: wrap;
}
.tool {
    margin: 0px 30px 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.button {
    border: solid 1px #000;
    border-radius: 5px;
    padding:0px 6px 3px;
    margin-top:20px;
    display: inline-block;
    cursor: pointer;
}
input {
    cursor: pointer;
}
h1 {
    margin: 30px 0;
    font-size: 40px;
}
h2 {
    width:100%;
    margin: 10px 0px 20px;
    background-color: aquamarine;
}
div {
    justify-content: center;
}

.hidden {
    display: none;
}
/*フッター*/
footer {
    width: 100%;
    text-align: center;
    padding: 1rem;
}
footer small {
    color: #c7c3ba;
    font-size: .875rem;
}