*{
    margin: 0px;
    padding: 0px;
}
input[type="text"], input[type="submit"], input[type="button"], input[type="reset"],
input[type="password"], input[type="number"], select, textarea{
    font-size: 18px;
}
input[type="date"]{
    font-size: 16px;
}
input, select{
    padding: 3px 5px;
}
html{
    display: flex;
    flex-flow: column;
    min-height: 100vh;
}
body{
    display: flex;
    flex-flow: column;
    min-height: 100vh;
    letter-spacing: 0.05em;
    word-wrap: break-word;
    overflow-x: hidden;
    overflow-wrap: break-word;
    font-family: 'Helvetica Neue',
      Arial,'Hiragino Kaku Gothic ProN',
      'Hiragino Sans',Meiryo,sans-serif;
    background-color: #f4faff;
}
header, main, footer{
    width: 1000px;
    margin: 0 auto;
}
header, footer{
    background-color: #cacaca;
}
header{
    height: 80px;
    display: flex;
    justify-content: space-between;
}
header p{
    margin-top: 25px;
    margin-right: 20px;
}
h1{
    padding-top: 15px;
    margin-left: 20px;
}
nav{
    width: 1000px;
    margin: 0 auto;
    background-color: #cccccc;
}
nav ul{
    display: flex;
    list-style: none;
}
nav ul li{
    border-right: 1px solid #333333;
}
nav ul li a{
    display: inline-block;
    width: 180px;
    padding-top: 10px;
    padding-bottom: 10px;
    text-decoration: none;
    text-align: center;
}
main{
    flex: 1;
    margin-top: 10px;
    padding-left: 20px;
}
.content{

}
table th {
    text-align: left;
}
footer{
    height: 80px;
    line-height: 80px;
    text-align: center;
}