#input_section {

    margin: 10px 10px 10px 10px;
    border: 2px solid lightgray;
    border-radius: 3px;

    padding: 10px 10px 10px 15px;
}

#search_title {
    font-size: 50px;
    font-weight: bold;
}

#search_comment {
    color: darkgray;
    font-size: 20px;
}

.search_form {
    height: 50px;
    margin-top: 10px;
    margin-bottom: 0;

    display: flex;
    justify-content: space-between;
}

#search_target_username {
    height: 30px;
    border-radius: 5px;
    padding-left: 5px;
    font-size: 15px;
    flex-grow: 1;
    margin-right: 20px;
    vertical-align: middle;
}

#search_button {
    background-color: #4179e1;
    color: white;
    height: 35px;
    font-size: 20px;
    vertical-align: middle;

    border: none;
    border-radius: 5px;
    margin-right: 20px;

    padding-left: 25px;
    padding-right: 25px;

    cursor: pointer;
}

#user_not_found_message {
    color: red;
    display: none;
    font-size: 30px;
}