.erp {
    display: inline-block;
    width: 100%;
    top: 0;
    background-color: #FF3B3F;
    color: white;
    padding: 2px 10px;
    text-align: center;
}

.block1 {
    position: fixed left;
    display: inline-block;
    width: 20em;
    height: 30em;
    overflow: auto;
    border: 1px solid grey;
    margin-top: 1em;
    margin-left: 1em;
}

.block2 {
    position: fixed left;
    display: inline-block;
    width: 20em;
    height: 15em;
    overflow: hidden;
    border: 1px solid grey;
    margin-top: 1em;
    margin-left: 1em;
}

.block3 {
    position: fixed left;
    display: inline-block;
    width: 30em;
    width: 27em;
    height: 30em;
    overflow: auto;
    border: 1px solid grey;
    margin-top: 1em;
    margin-left: .5em;
}

.block4 {
    display: inline-block;
    width: 31em;
    height: 30em;
    overflow: hidden;
    border: 1px solid grey;
    margin-top: 1em;
    margin-left: .5em;
}

.header1 {
    position: absolute;
    padding-top: 1em;
    display: inline-block;
    width: 17.5em;
    height: 2.9em;
    border: 1px solid black;
    border-top-left-radius: 9px;
    border-top-right-radius: 9px;
    margin-top: -10px;
    margin-left: -1px;
    background-color: #eee;
    text-align: center;
    font-size: 16px;
}

.header2 {
    position: absolute;
    padding-top: 1em;
    display: inline-block;
    width: 23.6em;
    height: 2.9em;
    border: 1px solid black;
    border-top-left-radius: 9px;
    border-top-right-radius: 9px;
    margin-top: -10px;
    margin-left: -1px;
    background-color: #eee;
    text-align: center;
    font-size: 16px;
}

.header3 {
    position: absolute;
    padding-top: 1em;
    display: inline-block;
    width: 27.1em;
    height: 2.9em;
    border: 1px solid black;
    border-top-left-radius: 9px;
    border-top-right-radius: 9px;
    margin-top: -10px;
    margin-left: -1px;
    background-color: #eee;
    text-align: center;
    font-size: 16px;
}

.block1 ul li {
    margin-top: 1em;
    font-size: 15px;
}

.tn {
    margin-top: 9em;
}

#btn_1 {
    width: 5em;
    margin-left: 7.7em;
    margin-top: .4em;
}

#btn_2 {
    width: 5em;
    margin-top: .3em;
    margin-left: 2em;
}

#btn_3 {
    margin-top: .3em;
    margin-left: 6em;
}

#option {
    margin-left: -3em;
    width: 16em;
    margin-top: 2em;
}

.pre {
    margin-left: 1em;
    margin-top: 3.5em;
}

.block4 #res_1 {
    margin-top: 3em;
}

.straight {
    margin-top: 2em;
    display: inline-block;
    height: 30em;
    margin-left: 2em;
}

th,
td {
    padding: 10px;
}

th {
    text-align: left;
}

table#t2 {
    border-collapse: collapse;
}

table#t2 th {
    background-color: black;
    color: white;
}

.select {
    width: 7em;
    margin-left: 6em;
    margin-top: 3em;
}

.form-control {
    margin-top: -1em;
}

@media (min-width: 320px) and (max-width:400px) {
    .straight {
        margin-left: -2%;
        margin-top: 18%;
    }
    .block3 {
        margin-top: -150%;
        margin-left: 100%;
        margin-bottom: 7%;
        margin-right: 5%;
    }
    .block4 {
        margin-top: -150%;
        margin-left: 240%;
        margin-right: 5%;
        margin-bottom: 14%;
    }
}

@media (min-width: 401px) and (max-width:480px) {
    .straight {
        margin-left: -2%;
        margin-top: 20%;
    }
    .block3 {
        margin-top: -130%;
        margin-left: 85%;
        margin-bottom: 6%;
        margin-right: 5%;
    }
    .block4 {
        margin-top: -130%;
        margin-left: 210%;
        margin-right: 5%;
        margin-bottom: 12%;
    }
}

@media (min-width: 481px) and (max-width:580px) {
    .straight {
        margin-left: -2%;
        margin-top: 22%;
    }
    .block3 {
        margin-top: -130%;
        margin-left: 70%;
        margin-bottom: 4%;
        margin-right: 5%;
    }
    .block4 {
        margin-top: -130%;
        margin-left: 170%;
        margin-right: 5%;
        margin-bottom: 9%;
    }
}

@media (min-width: 581px) and (max-width:680px) {
    .straight {
        margin-left: -2%;
        margin-top: 20%;
    }
    .block3 {
        margin-top: -130%;
        margin-left: 55%;
        margin-bottom: 3%;
        margin-right: 5%;
    }
    .block4 {
        margin-top: -130%;
        margin-left: 136%;
        margin-right: 5%;
        margin-bottom: 7%;
    }
}

@media (min-width: 681px) and (max-width:768px) {
    .straight {
        margin-left: 1%;
        margin-top: 20%;
    }
    .block3 {
        margin-top: -130%;
        margin-left: 47%;
        margin-bottom: 3%;
        margin-right: 5%;
    }
    .block4 {
        margin-top: -130%;
        margin-left: 116%;
        margin-right: 5%;
        margin-bottom: 6%;
    }
}

@media (min-width: 769px) and (max-width: 810px) {
    .straight {
        margin-left: 1%;
        margin-top: 20%;
    }
    .block3 {
        margin-top: -130%;
        margin-left: 40%;
        margin-bottom: 2.6%;
        margin-right: 5%;
    }
    .block4 {
        margin-top: -130%;
        margin-left: 95%;
        margin-right: 5%;
        margin-bottom: 5.4%;
    }
}

@media (min-width: 811px) {
    .straight {
        margin-left: 1%;
        margin-top: 20%;
    }
    .block3 {
        /* margin-top: -130%;
        margin-left: 3rem;
        margin-bottom: 2.6%;
        margin-right: 5%; */
    }
    .block4 {
        /* margin-top: -130%;
        margin-left: 63%; */
        /* margin-right: 5%; */
        /* margin-bottom: 5.4%; */
    }
}

@media (min-width: 1326px) {
    .straight {
        margin-left: 1%;
        margin-top: 3%;
    }
    .block3 {
        margin-top: -160%;
        margin-left: 1%;
        margin-bottom: 0%;
        margin-right: 5%;
    }
    .block4 {
        margin-top: -120%;
        margin-left: 57%;
        margin-right: 5%;
        margin-bottom: 1.4%;
    }
    #bs li a {
        text-decoration: none;
        border-width: 4em;
        height: 2.3em;
        margin-left: .5em;
        margin-top: 1.2em;
        margin-right: .5em;
        color: #fff;
        font-family: Ubuntu;
        font-weight: lighter;
        font-size: 24px;
    }
    .navbar-nav li a:hover,
    .navbar-nav li.active a {
        color: #F05054 !important;
        background-color: #fff !important;
    }
    .navbar-default .navbar-toggle {
        border-color: transparent;
        color: #fff !important;
    }
}