.bt-2ceba7e9-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}
.bt-2ceba7e9-container::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background: #ccc;
    transform: translateX(-50%);
}
.bt-2ceba7e9-item {
    position: relative;
    width: 50%;
    padding: 20px 40px;
    box-sizing: border-box;
}
.bt-2ceba7e9-item:nth-child(odd) {
    left: 0;
    text-align: right;
}
.bt-2ceba7e9-item:nth-child(even) {
    left: 50%;
    text-align: left;
}
.bt-2ceba7e9-item::after {
    content: '';
    position: absolute;
    top: 25px;
    width: 16px;
    height: 16px;
    background: #fff;
    border: 4px solid #333;
    border-radius: 50%;
    z-index: 1;
}
.bt-2ceba7e9-item:nth-child(odd)::after {
    right: -8px;
}
.bt-2ceba7e9-item:nth-child(even)::after {
    left: -8px;
}
.bt-2ceba7e9-content {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
}
@media (max-width: 767px) {
    .bt-2ceba7e9-container::before { left: 20px; }
    .bt-2ceba7e9-item { width: 100%; left: 0 !important; text-align: left; padding-left: 50px; padding-right: 20px; }
    .bt-2ceba7e9-item::after { left: 12px !important; }
}