* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Roboto', Arial;
}

/* For WebKit browsers (Chrome, Safari) */

::-webkit-scrollbar {
    width: 0px;
    /* Adjust the width as per your preference */
    height: 7px;
}

::-webkit-scrollbar-track {
    background: none;
}

::-webkit-scrollbar-thumb {
    background-color: lightgray;
    border-radius: 3px;
    /* Adjust the border radius as per your preference */
}

/* For Firefox */

::-moz-scrollbar {
    width: 0px;
    /* Adjust the width as per your preference */
    height: 7px;
}

::-moz-scrollbar-track {
    background: none;
}

::-moz-scrollbar-thumb {
    background-color: lightgray;
    border-radius: 3px;
    /* Adjust the border radius as per your preference */
}

/* For Edge and IE */

::-ms-scrollbar {
    width: 0px;
    /* Adjust the width as per your preference */
    height: 7px;
}

::-ms-scrollbar-track {
    background: none;
}

::-ms-scrollbar-thumb {
    background-color: lightgray;
    border-radius: 3px;
    /* Adjust the border radius as per your preference */
}

body {
    background: #ffffff;
    /*#e1e2e9;#eeeee7;*/
    font-family: 'Arimo', Sans-Serif;
}

.content_main {
    margin-top: 53px;
}

#a_tag {
    text-decoration: none;
    outline: none;
    color: darkred;
}

/* general main style */

.main_sec {
    display: grid;
    grid-template-columns: 1fr 3fr 1fr;
    gap: 10px;
    width: 100%;
    height: 100%;
}

/* menubar main style */

.menubar_main {
    position: fixed;
    background: #b70101;
    /*linear-gradient(to top,red,darkred);*/
    color: white;
    width: 100%;
    top: 0;
    z-index: 2;
    height: 50px;
    font-family: 'Kanit', Sans-Serif;
    border-bottom: solid 1px white;
}

.set_menu_center {
    background: none;
    height: 100%;
    width: 100%;
    display: flex;
    align-items: center;
}

.menu_bar_section {
    justify-content: center;
}

.sign_section {}

.login_section {
    justify-content: right;
}

/* leftright id is content left right element*/

#leftright {
    display: none;
}

/* this style was for footer*/

/* this was for footer leftright ele it was hidden by default but display in pc */

/* footer main style */

.footer_main {
    background: #302e2e;
    color: white;
    min-height: 50px;
}

#leftright_footer {
    visibility: hidden;
}

.center_footer_section {
    text-align: center;
}

.center_section {
    position: relative;
    margin: 10px;
}

/* loading div */

.loading_div {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgb(230, 230, 230, 0.3);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.loading_div img {
    width: 60px;
    height: 60px;
}

/* end of loading div */

/* start of chat box style */

.chat_box {
    position: fixed;
    z-index: 2;
    right: 5px;
    bottom: 5px;
    background: #b70101;
    height: 50px;
    width: 50px;
    border-radius: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: white;
    box-shadow: 0px 0px 3px 2px #dfdfdf;
}

.chat_box:active {
    background: red;
}

/* end of chat box style */

/* instant message style*/

.instant_message_div {
    position: fixed;
    min-height: 50px;
    background: white;
    color: #630909;
    box-shadow: 0px 0px 10px 2px lightgray;
    width: 250px;
    right: 5px;
    padding: 10px 25px 10px 25px;
    line-height: 1.5;
    border-radius: 10px;
    z-index: 3;
    font-family: 'Roboto', Sans-Serif;
}

.instant_message_close_icon {
    position: absolute;
    top: 0;
    right: 5px;
    color: gray;
}

.instant_message_close_icon:active {
    color: lightgray;
}

/* end of instant message style */

/* this style is for pc */

@media screen and (min-width: 768px) {
    /* change width of main_section ekement height */
    .main_sec {
        width: 90%;
        margin: 0 auto;
    }
    /* main nenu content */
    .main_content {
        display: grid;
        grid-template-columns: 0.5fr 4fr 0.5fr;
        gap: 10px;
        width: 100%;
        height: 100%;
    }
    /* this style was for leftright section*/
    #leftright {
        display: block;
    }
}

@media screen and (min-width: 600px) {
    .main_sec {
        width: 90%;
        margin: 0 auto;
    }
    /* main nenu content */
    .main_content {
        display: grid;
        grid-template-columns: 0.5fr 4fr 0.5fr;
        gap: 10px;
        width: 95%;
        height: 100%;
        background: none;
        margin: 0 auto;
    }
    /* this style was for leftright section*/
    #leftright {
        display: block;
    }
}

@media screen and (min-width: 1024px) {
    .main_sec {
        width: 75%;
        margin: 0 auto;
    }
    /* main nenu content */
    .main_content {
        display: grid;
        grid-template-columns: 0.5fr 4fr 0.5fr;
        gap: 10px;
        width: 80%;
        height: 100%;
        background: none;
        margin: 0 auto;
    }
    /* this style was for leftright section*/
    #leftright {
        display: block;
    }
}

@media screen and (min-width: 1280px) {
    .main_sec {
        width: 70%;
        margin: 0 auto;
    }
    /* main nenu content */
    .main_content {
        display: grid;
        grid-template-columns: 0.5fr 4fr 0.5fr;
        gap: 10px;
        width: 75%;
        height: 100%;
        background: none;
        margin: 0 auto;
    }
    /* this style was for leftright section*/
    #leftright {
        display: block;
    }
}

@media screen and (min-width: 1480px) {
    .main_sec {
        width: 65%;
        margin: 0 auto;
    }
    /* main nenu content */
    .main_content {
        display: grid;
        grid-template-columns: 0.5fr 4fr 0.5fr;
        gap: 10px;
        width: 70%;
        height: 100%;
        background: none;
        margin: 0 auto;
    }
    /* this style was for leftright section*/
    #leftright {
        display: block;
    }
}

@media screen and (min-width: 2000px) {
    .main_sec {
        width: 50%;
        margin: 0 auto;
    }
    /* main nenu content */
    .main_content {
        display: grid;
        grid-template-columns: 0.5fr 4fr 0.5fr;
        gap: 10px;
        width: 55%;
        height: 100%;
        background: none;
        margin: 0 auto;
    }
    /* this style was for leftright section*/
    #leftright {
        display: block;
    }
}

/*
font-family: 'Arimo', sans-serif;
font-family: 'Merriweather', serif;
font-family: 'Roboto', sans-serif;
font-family: 'Ubuntu', sans-serif;
*/