*{
    margin: 0;
    padding: 0;
}

/* define the main pattern of the web page */
body{
    background-color: #f4f4f8;
    color: #333;
    line-height: 1.5; /* 行高 */
    padding: 0; 

}

/* define title  */
header{
    width: 100%;
    margin-bottom: 20px;
    padding: 20px 0;
    text-align: center;
    background-color: #fff;
    overflow: hidden; /* 隐藏溢出部分，清除浮动 */
}

header nav{
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
}

h1{
    font-size: 2em; /* font size is two times standard font size */
    margin-bottom: 20px;
}


main{
    max-width: 800px;
    /* up and down outer margin is 0, left and right outer margin can be automatically adjusted. 
    The final result is that the contents are in the middle of the page.*/
    margin: 0 auto; 
}

section{
    background-color: #fff;
    padding: 20px;
    border-radius: 8px; 
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;

}

section a{
    text-decoration: none

}

h2{
    font-size: 1.5em;
    margin-bottom: 10px;

}

p{
    margin-bottom: 20px;
}

button{
    /* background-color: #2c89a0;
    color: #fff;
    border: none; */
    color: #247a8c;
    border: solid 1px #2c89a0;
    background-color: #fff;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;

}

button:hover{
    background-color: #247a8c;
    color: white;
}

footer{
    margin-top: 50px;
    text-align: center;
}

.country-list{
    float: left;
    width: 100%;
    margin-top: 10px;
    /* display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
    justify-content: center; */
}

.country-list a{
    display: block;
    float: left;
    height: 34px;
    line-height: 34px;
    margin-right: 10px;
    margin-top: 10px;
    padding: 0 10px;
    background-color: #e0e0e0;
    text-decoration: none;

    /* padding: 5px 15px; */
    border-radius: 5px;
    color: #333;
    transition: background-color 0.3s;

}

.country-list a.curr{
    color: #2c89a0;
    font-weight: bold;
}

.country-list a:hover{
    background-color: #d0d0d0;
}

.logo{
    float: left;
    font-size: 22px;
    font-weight: bold;
    font-style: normal;
    height: 34px;
    line-height: 34px;
    background-color: black;
    padding: 0 8px;
    border-radius: 6px;
    margin: 0;
}

.logo a{
    color: white;
    text-decoration: none;
}


/* Português (Brasil) Page */
.language-list{
    float: right;
    margin-top: 10px;
}

.language-list a{
    margin-left: 10px;
    color: #666;
    text-decoration: none;

}

.language-list a.curr{
    color: #333;
    font-weight: bold;
}

.language-list a:hover{
    color: #247a8c;
}