html,
body {
    height: 100%;
}

body {
    background-color: #002a56;
    background-image: radial-gradient(#0036b1, #040529);
}

.login-form {
    background-color: #fff;
    width: 420px;
    padding: 50px;
    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.layui-panel {
    border-radius: 7px;
}

.login-form .login-title {
    margin-bottom: 20px;
    text-align: center;
}

.login-form input {
    padding-left: 38px;
}

.login-form .layui-form-item .layui-icon {
    display: inline-block;
    height: 38px;
    width: 38px;
    line-height: 38px;
    text-align: center;
    position: absolute;
}

.login-form input[name="captcha"] {
    width: 195px;
    display: inline-block;
    margin-right: 1px;
}

#particles-js {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
}

#captcha {
    width: 120px;
    height: 40px;
}

.layui-input-affix layui-input-suffix {
    padding-left: 80px;
}

.layui-input-suffix .layui-icon-eye-invisible {
    margin-left: -18px; /* 负值将使元素向左移动 */
}
.layui-input-suffix .layui-icon-eye {
    margin-left: -18px; /* 负值将使元素向左移动 */
}
.layui-input-prefix i {
    margin-left: -18px; /* 或者你需要的任何负值 */
}