#section-project-register {
    /* margin-top: 500px; */
}
#section-project-register .container-inside {
    position: relative;
    z-index: 2;
}
#section-project-register.space-top .container-inside  {
    padding-top: calc(var(--cpn-space-top) + 20px);
}
#section-project-register.space-bottom .container-inside  {
    padding-bottom: calc(var(--cpn-space-bottom) + 20px);
}
#section-project-register.bg-img:before {    
    position: absolute;
    /* position:fixed; */ /* stretch a fixed position to the whole screen */
    width: 100%;
    /* height: 100vh; */
    height: 100%;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    content: "";
    z-index: 0;
    /* z-index: -1; */ /* needed to keep in the background */
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;    
}

/* topic */
.project-register-topic {
    position: -webkit-sticky;
    position: sticky;
    top: 200px;
    /* background-color: rgba(255,0,0,0.2); */
}
.project-register-topic .title-section {
    position: relative;
}
.project-register-topic .title-section .title {}
.project-register-topic .title-section .description {}
.project-register-topic .title-section .remark {
    display: block;
    opacity: 0.6;
}
.project-register-topic .title-section .title+.description,
.project-register-topic .title-section .title+.remark,
.project-register-topic .title-section .description+.remark {
    margin-top: 5px;
}
.project-register-topic .contact-section {
    position: relative;
    margin-top: 80px;
}

/* register */
.project-register-row,
.project-register-row>.project-register-col {
    position: relative;
}
.project-register-row,
.project-register-row a {
    color: inherit !important;
    text-decoration: none !important;
}
.project-register-row {
    display: flex;
    flex-wrap: nowrap;
    align-items: stretch;
}
.project-register-row>.project-register-col {}
.project-register-row>.project-register-col.this-col-topic {
    width: 520px;
    padding-right: 100px;
}
.project-register-row>.project-register-col.this-col-form {
    width: calc(100% - 520px);
}

.project-register-row>.project-register-col.this-col-form .contact-section {
    display: none;
}

/* xxl */
@media (min-width: 1400px) {}

/* xxl - 1 */
@media (min-width:1500px) and (max-width: 1599.98px) {}

/* xxl - 2 */
@media (min-width: 1400px) and (max-width: 1499.98px) {}

/* xl */
@media (min-width: 1200px) and (max-width: 1399.98px) {

    /* register */
    .project-register-row>.project-register-col.this-col-topic {
        width: 420px;
        padding-right: 70px;
    }
    .project-register-row>.project-register-col.this-col-form {
        width: calc(100% - 420px);
    }

}

/* lg */
@media (min-width: 992px) and (max-width: 1199.98px) {

    /* register */
    .project-register-row>.project-register-col.this-col-topic {
        width: 400px;
        padding-right: 50px;
    }
    .project-register-row>.project-register-col.this-col-form {
        width: calc(100% - 400px);
    }

}

/* md */
@media (min-width: 768px) and (max-width: 991.98px) {

    /* register */
    .project-register-row>.project-register-col.this-col-form .button-row {
        width: 300px;
        margin-left: auto;
        margin-right: auto;
    }    

}


/* md - sm - xs */
@media (max-width: 991.98px) {

    /* topic */
    .project-register-topic .title-section {
        text-align: center;
    }

    /* register */
    .project-register-row {
        flex-wrap: wrap;
    }
    .project-register-row>.project-register-col.this-col-topic,
    .project-register-row>.project-register-col.this-col-form {
        width: 100%;
        padding: 0;
    }  
    .project-register-row>.project-register-col.this-col-topic .contact-section {
        display: none;
    }
    .project-register-row>.project-register-col.this-col-form .contact-section {
        display: block;
        text-align: center;
        margin-top: 40px;
    }
    .project-register-row>.project-register-col.this-col-topic+.project-register-col.this-col-form {
        margin-top: 20px;
    }
    .project-register-row>.project-register-col.this-col-form .button-row>.button {
        width: 100%;
    }

}

/* sm - xs */
@media (max-width: 767.98px) {}

/* sm */
@media (min-width: 576px) and (max-width: 767.98px) {

    /* register */
    .project-register-row>.project-register-col.this-col-form .button-row {
        width: 60%;
        margin-left: auto;
        margin-right: auto;
    }

}

/* xs */
@media (max-width: 575.98px) {

    #section-project-register .container-inside {
        padding-top: 50px;
        padding-bottom: 50px;
    }

}

/* xs custom */
@media (max-width: 399.98px) {}