.manrope {
    font-family: "Manrope", sans-serif;
    font-optical-sizing: auto;
    font-style: normal;
}
*{
    margin: 0;
    padding: 0;
}
html, body {
    width: 100%;
    font-family: Manrope, sans-serif;
    font-size: 13px;
    margin: 0;
    padding: 0;
    color: #3a3a3a;
  
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
overflow-x: hidden;
transition: all 0.8s ease;
}

header {
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 1000;
 font-size: 13px;
    text-align: center;
}
nav{padding: 1rem;}
nav ul {
    font-weight: 400;
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: space-between;
}

nav ul li {
    display: inline;
    margin: 0 1rem;
}


a {
   color: #252525;
}

a:focus, a:hover {
    text-decoration: underline;
}

button, input {
    display: inline;
    text-align: left;
    margin: 0 0 2px;

    line-height: 1;
    border: 1px solid #a4a4a4;
    font-size: 13px; 
}

input, textarea {
    width: 100%; /* 设置相同的宽度 */
padding:0;
    line-height: inherit;
  
    border-bottom: 1px solid #a4a4a4;

}

button::-moz-focus-inner, input::-moz-focus-inner {
    margin: 0;
    padding: 0;
    border: none;
    outline: none;
}

button {
    width: auto;
    padding: 5px;
   background-color: white;
    cursor: pointer;
    float: right;
}

input:focus, textarea:focus {
    color: #333;
}

button:focus, button:hover {
    border-radius: 5px;
}

input[name="math"] {
    width: 30px;
}

#guestbook {

    padding: 0;
    margin: 0;
    width: 100%;
    height: 100%;
}

form {
    display: block;
    padding: 1rem;
    position: absolute;
    top: 50px;
   
    height: 10vh; /* 使用视口高度单位 */
    font-size: 11px;
}

.guest-item {
    font-size: 12px;
    padding: 10px;
    width: auto;
    min-height: 4rem;
  
    border-radius: 15px;

font-family: 'Courier New', Courier, monospace;

box-shadow: 0px 0px 3.8px rgba(0, 0, 0, 0.25), inset -1px -1px 4px rgba(0, 0, 0, 0.25);


}

.guest-name, .guest-timestamp {
    font-size: 10px;
}




.message-error, .message-warning {
    padding: 5px 10px;
}

.message-warning {
    background-color: #DBFFD8;
}

.message-error:first-child, .message-warning:first-child {
    border-top: none;
}